<style>
  body { overflow: scroll }
  div {
    width: 10px;
    height: 10px;
    background-color: #d64203;
  }
</style>

<body>
  <div id="a"></div>
  <div id="b"></div>
  <div id="c"></div>
  <div id="d"></div>

  <!--
  Ensure that the scroller positioned the same way as it would be in the
  'overflow: auto' case. We'll have scrollbars either way, but we don't
  want the '!=' reftest to spuriously succeed because of the scrollers.
  -->
  <div style="width: 500px; height: 500px; background-color: black">
</body>

<script>
  // client{Width, Height} consist of the area _inside_ the scrollbars, so these
  // manually calculated units reflect the fact that with 'overflow: scroll' set,
  // viewport units are sized taking the scrollbars into account.
  var vw = 0.01 * document.body.clientWidth;
  var vh = 0.01 * document.body.clientHeight;
  var vmin = Math.min(vw, vh);
  var vmax = Math.max(vw, vh);
  document.getElementById('a').style.width = (50 * vw) + "px";
  document.getElementById('b').style.height = (25 * vh) + "px";
  document.getElementById('c').style.width = (35 * vmin) + "px";
  document.getElementById('d').style.height = (25 * vmax) + "px";
</script>
